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-Tough PVC injection-molded base holds 4 oz of FDA-approved mineral oil, the sharpening stone carriage, and three 6 x 2 x 1/2sharpening stones
-Sharpening stones (coarse Crystolon for cutting a new edge, medium Crystolon for sharpening dull edges, and fine India for restoring cutting edge) are rotated through the oil bath by turning the handle
-Adds just the right amount of oil without any mess
-Stones are reversible; each stone has two sharpening sides
-Includes base, stone carriage, three stones, oil, and cover. 3 lbs.
Specify Additional Stone Style: Fine, Medium, Coarse
You can always remove it later.
Found on page 0677 of Source Book 2008 Fall/Winter